Motion video signal processing for recording or reproducing – Local trick play processing – With randomly accessible medium
Patent
1997-10-03
2000-05-02
Garber, Wendy
Motion video signal processing for recording or reproducing
Local trick play processing
With randomly accessible medium
386111, H04N 576
Patent
active
060582413
ABSTRACT:
Encoded data is reversely reproduced by decoding each picture only once and using only as many frame memory sections as are needed in a normal playback operation. A picture header detector detects a picture header from data read out from a video code buffer to identify the type of picture The picture type information controls a picture data selecting circuit for selecting frames of I and P pictures equal in number to the number of frame memory sections in a frame memory bank. The selected frames are supplied to an inverse VLC circuit to be decoded, starting at the head of a GOP with an I picture. The decoded I and P pictures are stored in the frame memory bank and transmitted to a display unit, starting with the temporally most recent picture and reading backward.
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Fujinami Yasushi
Kawamura Makoto
Nakagawa Tomihiro
Yonemitsu Jun
Frommer William S.
Garber Wendy
Moe Aung S.
Smid Dennis M.
Sony Corporation
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